Libraries required¶
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from __future__ import print_function, division
%matplotlib inline
import thinkdsp
import thinkplot
import warnings
warnings.filterwarnings('ignore')
from IPython.html.widgets import interact, fixed
from IPython.display import display
import matplotlib.pyplot as plt
#import librosa
Taking audio in wav format as input¶
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#wave, sr = librosa.load('170255__dublie__trumpet.wav')
wave = thinkdsp.read_wave('170255__dublie__trumpet.wav')
wave.normalize()
wave.make_audio()
Out[3]:
In [9]:
wave2=wave
wave3=wave
for ploting the data¶
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wave.plot()
perform stretching operation on audio signal¶
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def stretch(wave, factor):
wave.ts *= factor
wave.framerate /= factor
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stretch(wave, 0.5)
wave.make_audio()
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Displaying result¶
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wave.plot()
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stretch(wave2, 1.5)
wave2.make_audio()
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wave2.plot()
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stretch(wave3, 3.5)
wave3.make_audio()
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In [15]:
wave3.plot()
